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3. Press the up or down arrows to select the desired
automatic restart time (2–60 min. range). The default
value is 10 minutes. Press SET button to store the
value.The display will flash to acknowledge. Press the
DISPLAY SELECT button or wait 30 seconds for the
controller to automatically exit the set routine.The
display returns to READY TO START.
4. Start the compressor and adjust the isolation
valve to allow the unit to slowly reach the offline
pressure and unload.The compressor should run for
a minimum of 10 min. and unloaded for the pre–set
time and then shut down.
5. The compressor should restart automatically when
the system air pressure drops below the online air
pressure setting.
CONTROLLER WARNING MESSAGES
In the event of a warning, the controller will display a
message and the alarm L.E.D. [10] will flash. The warning
message will alternate with the normal display every 4
seconds, the compressor will continue to run but the fault
should be rectified as soon as possible. The arrow keys
[23] should be used to index the display for any additional
warning messages. A warning message may be reset by
depressing set [21] once.
NOTE:
The warning will recur if the fault has not been
rectified . The following warning messages may be
displayed:
SEPARATOR ELEMENT
The separator element is dirty or blocked and should be
replaced.
AIREND TEMPERATURE
The airend temperature reaches 97% of the high airend
temperature set point (i.e. 223° F (106° C)).
CONTROLLER ALARMS
In the event of an alarm, the controller will execute an
emergency stop, the alarm L.E.D. [10] will illuminate and
an alarm message will be displayed. The arrow keys [23]
should be used to index the display for any additional
alarm messages. An alarm is reset by depressing set [21]
twice within a 3 second period after the fault has been
rectified. The compressor will restart only when all alarm
conditions have been rectified. The following alarm
messages may be displayed (For fault correction see the
Fault Finding section):
STARTER FAULT
The contactor sequence during start or stop is incorrect.
AIREND TEMPERATURE
The airend discharge temperature is above the high
temperature set point.
8
INTELLISYS® OPTION
MOTOR OVERLOAD
The motor overload contacts are open. The motor
overload must be reset before the controller can be reset.
REVERSE ROTATION
No sump pressure is detected after the first 2 seconds
of running. Isolate the machine and reverse the mains
supply connections before resuming.
OVER PRESSURE
The line pressure is 15 psi (1 bar) greater than the rated
discharge pressure.
TEMPERATURE SENSOR 1
The airend temperature sensor/ connecting cable has
failed.
TEMPERATURE SENSOR 2
The separator tank temperature sensor/connecting cable
has failed.
PRESSURE SENSOR
Indicates pressure transducer failure / connecting cable
fault.
FAILED CALIBRATION
During calibration routine, a 10% of scale error has
been detected. Ensure that the separator is completely
blowndown and repeat calibration.
CONTROL POWER LOSS
The 48Vac signal is not present at the controller.
REMOTE START FAILURE
Momentary remote start has not disengaged before
star–delta transition. This alarm is active only if the
remote start/stop is enabled.
REMOTE STOP FAILURE
The momentary remote stop switch has not disengaged
when the start signal is received. This alarm is active only
if the remote start/stop is enabled.
EMERGENCY STOP
The emergency stop button is engaged.
LOW SUMP PRESSURE
The sump pressure drops below 15 psi (1 bar) during
normal operation.
8044766 Rev.A
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